Effect

Generation II

Morning Sun restores the user's current HP based on the weather and time of day. In day and at night, clear conditions restore ¼, sunny conditions restore ½ and other conditions restore ⅛ HP. In morning, the move restores twice as much HP.

Generation III

Morning Sun restores the user's current HP based on the weather in the battle. Normal conditions restore ½ total HP, sunny conditions restore ⅔ total HP, and other types of weather restore ¼ total HP.

In other games

Morning Sun heals all team members for a fixed amount of HP depending on the weather: 50 HP under clear weather, 80 HP under sunny weather, 40 HP under cloudy weather, 30 HP under sandstorm, 10 HP under rain and hail, and 1 HP under snow.